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| author | Wesley Cheng <quic_wcheng@quicinc.com> | 2022-09-01 12:36:25 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-07 16:26:45 +0200 |
| commit | 8422b769fa46bd429dc0f324012629a4691f0dd9 (patch) | |
| tree | b77f495e42bff9ad6594376df1a31cdfb912e5f5 /drivers/usb/dwc3/gadget.c | |
| parent | b353eb6dc285a0775a447f53e5b2a50bf3f9684f (diff) | |
| download | linux-8422b769fa46bd429dc0f324012629a4691f0dd9.tar.gz linux-8422b769fa46bd429dc0f324012629a4691f0dd9.tar.bz2 linux-8422b769fa46bd429dc0f324012629a4691f0dd9.zip | |
usb: dwc3: gadget: Submit endxfer command if delayed during disconnect
During a cable disconnect sequence, if ep0state is not in the SETUP phase,
then nothing will trigger any pending end transfer commands. Force
stopping of any pending SETUP transaction, and move back to the SETUP
phase.
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20220901193625.8727-6-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 0149c9106752..b75e1b8b3f05 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -3778,13 +3778,24 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) reg &= ~DWC3_DCTL_INITU2ENA; dwc3_gadget_dctl_write_safe(dwc, reg); + dwc->connected = false; + dwc3_disconnect_gadget(dwc); dwc->gadget->speed = USB_SPEED_UNKNOWN; dwc->setup_packet_pending = false; usb_gadget_set_state(dwc->gadget, USB_STATE_NOTATTACHED); - dwc->connected = false; + if (dwc->ep0state != EP0_SETUP_PHASE) { + unsigned int dir; + + dir = !!dwc->ep0_expect_in; + if (dwc->ep0state == EP0_DATA_PHASE) + dwc3_ep0_end_control_data(dwc, dwc->eps[dir]); + else + dwc3_ep0_end_control_data(dwc, dwc->eps[!dir]); + dwc3_ep0_stall_and_restart(dwc); + } } static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) |